Aid yeitilating railway-cabs



@pitre gieten atrnt D. nnorrannn, or PHILADELPHIA, PENNSYLVANIA'.

Letters Patent Noi. 74,89 9,vZzttetZ February 25, 1868.

APPARATUS FOR HEATING ANDTVENTILATIN G RAILWAY-GARSz To am. wHo'M Ir MAY conc-EEN;

it;knlown`.that I, H DOTTEnER, of Philadelphia, Pennsylvania, .havciinvented an Improved Method of Heating and'lventilating Itailr'oadars; and I do hereby-'declare the following Vto be a full, clear, and exact dcscriptiongof the same.

My invention relates to a method of sup'plyinglieated or cold air to a series of cars composing a railway-Y train; and it consists inthe combining for this purpose, within acar placed ata suitable point in the train', oi'- `a fireplace, with certain apparatus, fully describedhereaftcr, whereby a current of hotcrcold air may be created and' maintained through pipes or conduits, by which the said air is conducted to and distributed within the several cars. In the drawing, which forms a part' ot'v this speciticaticn v t Figure 1 is a side viewpartly in section, showing my improved-mode of heating and Ventilating cars,

Figure 2, a transverse sectional view on the line 1-2, tig. 1. f i i Figure 3, a plan view, partlyin section, of the car within which the heating and' ventilatingapparatus is contained; and 'y i 'Figure 4, an inverted plan, showing the arrangement of 'the pipes'or conduits by which the air is conveyed and distributed within the several cars. t

-Similar letters referto similar parts throughout the several views. l is the car within which my heating and Ventilating-apparatus is contained; BV representing one cfa train .of cars which it may be desired to heat or ventilate. At a suitable point within the car A, I securely fix a easing, a, containing a fireplace, of which a' is the chimney., b the ash-pit, and t the {ire-door. i Surrounding the casing a; at a slight distance therefrom, is another casing, e, the space between thetwo casings'serving' as a steam-boiler, for `the purpose hereinafter set forth. The whole is enclosed within a drum,` cZ,`the spaced', between which and the casing c, serves usan air-heating chamber. 'To a crank-shaft, e, outside Vthe-drum cZ, and within'a suitable box, e', withlopen sides, is hung an ordinary fanfbloweaf, a pipe, f, `serving as a communica tion between the interior of the box e and 'thatof the drum el, Motion is communicated-to the crank-shaft e by aconnectingrod,y, oika steam-cylinder, D, secured tc a suitable bed-plate, and to which steam is supplied by the pipe lz, communicating with the steamboiler ct.

Beneath the .car A are two pipes,j and .7", communicating, by' means of abraneh, at their outer ends, as

shown iu the inverted plan view; and beneath lthe cars'to be heated orfventilated are arranged-pipes, It and Zt', similar'to andin a line with the pipes j andy", with which they are connected by tubes, m m, of India rubber or other suitable flexible material.` The pipej of the c ar A communicates with the pipef by means ofa vertical pipe, Z, fig. 1, and also with' the interior of the drum eZ through an opening, a'. The pipej may also communii cate with the drum eZ through a similar opening, 4xi.

' A valve or damper, Z, in the' pipe Z, serves to intercept .the communication between the pipesj" andj; and by meansof a similarfvalvmp, situated ata point in the pipe f' between the pipe Z and the drum d, the com munication between the latter and thepip'ef may be closed.

When it is desi-red to supply heated air to the cars of a train, the valve Z. is closed,and the Valvep beng opened, the fan-blowerfis caused to revolve rapidly in the direction ofthe arrow, and draws through the open sides of. the box in which it is contained a stream of air-,which it propels forcibly through the pipef" into the air-chamber d. The air, after traversing this chamber, and becoming Athoroughly heated by contact with the casing c of-tlieboiler, enters the'pipej through the opening e'. From the pipesj andj the current of heated nir is conveyed, through the flexible conneeting-tubes m, to the pipes c and-Ze ofthe cars to beheated, tc which it is admitted, at suitable intervals, through openings in the pipes Zt and le', and,correspouding openings in the noor of the `cargas illustrated at y, iig. 1, the quantity of air adniitted through these openings being regulated by means of ordinary registers. t

` It will be easily seen that'in this manner all the cars oi arailway-train may be eii'ectually, pleasantly, and

economically warmed, the disagreeable inequality and repeated changes ot' temperature, so detrimental to health',

and the liability to accident attending ordinary methods of heating, being entirely obviated.

It will also be seen that mya-pparatus may'be used with advantage for supplying cool air to the cars in summer. When it is desired to do this,itris merely necessary toelose the valvep and open thevalvc Z', so that the air propelled-by the fan-blcmler, instead of. passing through the air-heating chamber, and thence .tothe pipes j and j', passes directi-y to the latter from the pipef", through the connecting-pipe Z, and will` he conveyed to the pipesI lc and 7c,'and thence admitted to the ears.`

In thisman'ner a cohstant stream of pure, cool air, may be maintained within the ears, unattended by the disagreeable-stream ef dust which accompanies the air when admitted through the open windows.

If desired, a numberv of pipes may be secured to the casing d, within the air-heating chamber d', and com- 'municating with the interior ofthe steam-boiler c, so that currents of steam or hot water may pass throughthe said pipes for the purpose of more thoroughly heating the air contained in the chamber d.

Without`, therefore, confining myself to the precise arrangement of parts herein described. What I claim as my invention7 and desire to secure by Letters Patent, is-

v The within-described combination of furnace, boiler, air-heating chamber, and engine, with the fan-blower, or equivalent device, whereby a forcihlecurrcnt of heated or cold air is created amd maintained through pipes, which convey, the nir toand distribute it within the several curs of a railroad-train, substantially in the manner described. I

In testimony whereof, I have signed my name to this specica'tion in the presence et' two subscribing witnesses. D. H. DOTTERER.

Witnesses;v

` JonN WHITE,

W. J'. R. DELANY. 

